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這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)碛嘘P(guān)利用PHP怎么實(shí)現(xiàn)一個(gè)注冊(cè)登錄功能,文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
代碼如下:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Zhe - 注冊(cè)登錄</title> <link rel="stylesheet" type="text/css" href="https://www.layuicdn.com/layui/css/layui.css" rel="external nofollow" /> <script src="https://www.layuicdn.com/layui/layui.js" charset="utf-8"></script> </head> <body> <fieldset class="layui-elem-field layui-field-title" > <legend>Zhe - 登錄注冊(cè)演示</legend> </fieldset> <div > <div class="layui-row layui-col-space15"> <div class="layui-col-md6"> <div class="layui-card"> <div class="layui-card-header">注冊(cè)</div> <div class="layui-card-body"> <form class="layui-form" action="register.php" method="post" onsubmit="return checkForm(this)" lay-filter="example"> <div class="layui-form-item"> <label class="layui-form-label">輸入框</label> <div class="layui-input-block"> <input type="text" name="username" placeholder="請(qǐng)輸入賬號(hào)" class="layui-input"> </div> </div> <div class="layui-form-item"> <label class="layui-form-label">密碼框</label> <div class="layui-input-block"> <input type="password" name="password" placeholder="請(qǐng)輸入密碼" class="layui-input"> </div> </div> <div class="layui-form-item"> <div class="layui-input-block"> <input type="submit" class="layui-btn layui-btn-normal" value="立即注冊(cè)"/> </div> </div> </form> </div> </div> </div> <div class="layui-col-md6"> <div class="layui-card"> <div class="layui-card-header">登錄</div> <div class="layui-card-body"> <form class="layui-form" action="login.php" method="post" onsubmit="return checkForm(this)" lay-filter="example"> <div class="layui-form-item"> <label class="layui-form-label">輸入框</label> <div class="layui-input-block"> <input type="text" name="username" placeholder="請(qǐng)輸入賬號(hào)" class="layui-input"> </div> </div> <div class="layui-form-item"> <label class="layui-form-label">密碼框</label> <div class="layui-input-block"> <input type="password" name="password" placeholder="請(qǐng)輸入密碼" class="layui-input"> </div> </div> <div class="layui-form-item"> <div class="layui-input-block"> <input type="submit" class="layui-btn layui-btn-normal" value="立即登錄"/> </div> </div> </form> </div> </div> </div> </div> </div> <script type="text/javascript"> // 驗(yàn)證輸入不為空的腳本代碼 function checkForm(form) { if(form.username.value == "") { alert("用戶名不能為空!"); form.username.focus(); return false; } if(form.password.value == "") { alert("密碼不能為空!"); form.password.focus(); return false; } return true; } </script> </body> </html>
login.php文件
代碼如下:
<?php session_start(); header("content-type:text/html;charset=utf-8"); //連接數(shù)據(jù)庫(kù) $link = mysqli_connect("localhost","pay_com_cn","pay_com_cn","pay_com_cn"); if (!$link) { die("連接失敗: " . mysqli_connect_error()); } //接收$_POST用戶名和密碼 $username = $_POST['username']; $password = $_POST['password']; //查看表user用戶名與密碼和傳輸值是否相等 $sql = "SELECT * FROM user WHERE username = '$username' AND password = '$password'"; //result必需規(guī)定由 mysqli_query()、mysqli_store_result() 或 mysqli_use_result() 返回的結(jié)果集標(biāo)識(shí)符。 $result = mysqli_query($link,$sql); $num = mysqli_num_rows($result);//函數(shù)返回結(jié)果集中行的數(shù)量 //判斷是否登錄后顯示或跳轉(zhuǎn) if($num){ echo '登錄成功'; }else{ echo'登錄失敗'; } mysqli_close($link);//關(guān)閉數(shù)據(jù)庫(kù) ?>
register.php文件
代碼如下:
<?php header("content-type:text/html;charset=utf-8"); //連接數(shù)據(jù)庫(kù) $link = mysqli_connect("localhost","pay_com_cn","pay_com_cn","pay_com_cn"); if (!$link) { die("連接失敗: " . mysqli_connect_error()); } //接收$_POST用戶名和密碼 $username=$_POST['username']; $password=$_POST['password']; //查看表user用戶名是否存在或?yàn)榭? $sql_select = "SELECT * FROM user WHERE username = '$username'"; //result必需規(guī)定由 mysqli_query()、mysqli_store_result() 或 mysqli_use_result() 返回的結(jié)果集標(biāo)識(shí)符。 $select = mysqli_query($link,$sql_select); $num = mysqli_num_rows($select);//函數(shù)返回結(jié)果集中行的數(shù)量 if($username == "" || $password == "") { echo "請(qǐng)確認(rèn)信息完整性"; }else if($num){ echo "已存在用戶名";//已存在賬戶名輸出錯(cuò)誤 }else{ $sql="insert into user(username,password) values('$username','$password')"; $result=mysqli_query($link,$sql); //判斷是否注冊(cè)后顯示內(nèi)容 if(!$result) { echo "注冊(cè)不成功!"."<br>";//輸出錯(cuò)誤 echo "<a href='index.php'>返回</a>";//超鏈接到首頁 } else { echo "注冊(cè)成功!"."<br/>";//輸出成功 echo "<a href='index.hphp'>立刻登錄</a>";//超鏈接到首頁 } } ?>
最后附上本文用到的mysql表
注意先將數(shù)據(jù)庫(kù)和user表字段創(chuàng)建完成在運(yùn)行程序
上述就是小編為大家分享的利用PHP怎么實(shí)現(xiàn)一個(gè)注冊(cè)登錄功能了,如果剛好有類似的疑惑,不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí),歡迎關(guān)注億速云行業(yè)資訊頻道。
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